Piezoelectric generators, motor and transformers

• US 7,696,673 B1
• Filed: 02/08/2007
• Issued: 04/13/2010
• Est. Priority Date: 12/07/2006
• Status: Active Grant

• Current Assignee: Dmitriy Yavid
• Original Assignee: Dmitriy Yavid
• Inventors: Yavid, Dmitriy
• Primary Examiner(s): Benson; Walter
• Assistant Examiner(s): ROSENAU, DEREK JOHN
• Application Number:
  US11/703,924
• Time in Patent Office: 1,160 Days
• Field of Search: 310/329, 310/339
• US Class Current: 310/339
• CPC Class Codes: F42C 11/02 with piezo-crystal
• CPC Class Codes: H02N 2/18 producing electrical output from mechanical input, e.g. generators for measurement devices G01
• CPC Class Codes: H02N 2/185 using fluid streams
• CPC Class Codes: H10N 30/40 with electrical input and electrical output, e.g. functioning as transformers

Abstract

Disclosed are various embodiments of systems, devices and methods for generating electricity, transforming voltages and generating motion using one or more piezoelectric elements operably coupled to one or more non-piezoelectric resonating elements. In one embodiment, a non-piezoelectric resonating element is configured to oscillate and dissipate mechanical energy into a piezoelectric element, which converts a portion of such mechanical energy into electricity and therefore acts as a generator. In another embodiment, a piezoelectric element is configured to drive one or more mechanical elements operably coupled to the one or more non-piezoelectric resonating elements, and therefore acts as a motor. In still another embodiment, a piezoelectric element is operably coupled to a non-piezoelectric resonating element to form an electrical transformer. The mechanical properties of the non-piezoelectric resonating elements are typically selected to permit relatively high permissible stress and strain in comparison to the corresponding piezoelectric elements to which they are operably coupled or attached.

Claims

1. An inertial force piezoelectric generator, comprising:

(a) at least one piezoelectric element capable of generating electrical current in response to at least one of movement, deflection and stress being applied thereto;

(b) a non-piezoelectric oscillation element operatively coupled to the at least one piezoelectric element and configured to provide the at least one of movement, deflection and stress thereto, and

(c) at least one proof mass configured to move from a first initial position to a second final position, the proof mass being configured to deflect at least a portion of the non-piezoelectric oscillation element when the at least one proof mass moves between the first position and the second position in response to the proof mass and the generator being accelerated;

wherein the at least one proof mass is configured to induce oscillation in the non-piezoelectric oscillation element by deflecting or deforming at least a portion of the non-piezoelectric element when moving from the first position to the second position, the at least one proof mass not engaging the non-piezoelectric element when the proof mass is in the second position, electrical current being generated in the piezoelectric element by the oscillation of the non-piezoelectric element.

2. The inertial force piezoelectric generator of claim 1, wherein the non-piezoelectric oscillation element forms a beam having at least one distal end configured to be deflected to deformed by the proof mass and a proximal portion configured for attachment to the piezoelectric element.

3. The inertial force piezoelectric generator of claim 1, wherein a plurality of proof masses are employed to deflect or deform the non-piezoelectric oscillation element.

4. The inertial force piezoelectric generator of claim 1, wherein the non-piezoelectric oscillation element forms a beam having first and second distal ends configured to be deflected or deformed by first and second proof masses and a portion disposed between the distal ends is configured for attachment to the piezoelectric element.

5. The inertial force piezoelectric generator of claim 1, further comprising means for retaining the at least one proof mass in the second position.

6. The inertial force piezoelectric generator of claim 1, wherein the at least one proof mass comprises a ball.

7. The inertial force piezoelectric generator of claim 1, wherein the generator forms a portion of a projectile.

8. The inertial force piezoelectric generator of claim 7, wherein the projectile is one of an artillery shell, a missile, a rocket, a mortar, a bomb, and a bullet.